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<h5><a href="https://github.com/urbanjost/M_strings">[UP]</a></h5>
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<H1><HR><I>Manual Reference Pages &nbsp;-&nbsp;</I><NOBR>modif (3m_strings)</NOBR><HR></H1>
</CENTER>
<A name=0>

     <H3>NAME</H3>

</A>
<BLOCKQUOTE>
<B>modif</B>(3f) - [M_strings:EDITING] emulate the MODIFY command from the
line editor XEDIT
(LICENSE:PD)
<P>
</BLOCKQUOTE>
<A name=contents></A><H3>CONTENTS</H3></A>
<BLOCKQUOTE>
<A HREF=#1>Synopsis</A><BR>
<A HREF=#2>Description</A><BR>
<A HREF=#3>Examples</A><BR>
<A HREF=#4>Author</A><BR>
<A HREF=#5>License</A><BR>
</BLOCKQUOTE>
<A name=6>

     <H3>SYNOPSIS</H3>

</A>
<BLOCKQUOTE>
subroutine <B>modif</B>(cline,cmod)
<P>
<PRE>
    character(len=*) :: cline ! input string to change
    ! directive provides directions on changing string
    character(len=*) :: cmod
<P>
</PRE>
</BLOCKQUOTE>
<A name=2>

     <H3>DESCRIPTION</H3>

</A>
<BLOCKQUOTE>
<B>MODIF</B>(3f) Modifies the line currently pointed at using a directive
that acts much like a line editor directive.
Primarily used to create interactive utilities such as input history
editors for interactive line-mode programs.
<P>
the modify directives are as follows-
</BLOCKQUOTE>
<A name=>

    <H4>&nbsp; &nbsp; DIRECTIVE EXPLANATION</H4>
</A>
<BLOCKQUOTE>
<P>
<TABLE cellpadding=3>
<TR valign=top><TD colspan=2>
<B>^STRING#</B> </TD></TR><TR valign=top><TD width=6%>&nbsp;</TD><TD>
Causes the string of characters between the ^ and the
next # to be inserted before the characters pointed to
by the ^. an ^ or & within the string is treated as a
regular character. If the closing # is not specified,
<B>MODIF</B>(3f) inserts the remainder of the line as if a # was
specified after the last nonblank character.
<P>
There are two exceptions. the combination ^# causes a #
to be inserted before the character pointed to by the
^, and an ^ as the last character of the directives
causes a blank to be inserted.
</TD></TR>
<TR valign=top><TD width=6% nowrap>
<B>#</B> </TD><TD valign=bottom>
(When not the first # after an ^) causes the character
above it to be deleted.
</TD></TR>
<TR valign=top><TD width=6% nowrap>
<B>&</B> </TD><TD valign=bottom>
Replaces the character above it with a space.
</TD></TR>
<TR valign=top><TD width=6% nowrap>
<B>(SPACE)</B> </TD><TD valign=bottom>
A space below a character leaves it unchanged.
</TD></TR>
<TR></TR></TABLE>Any other character replaces the character above it.
</BLOCKQUOTE>
<A name=3>

     <H3>EXAMPLES</H3>

</A>
<BLOCKQUOTE>
Example input/output:
<P>
<PRE>
   THE INPUT LINE&#46;&#46;&#46;..... 10 THIS STRING  TO BE MORTIFD
   THE DIRECTIVES LINE&#46;&#46;&#46;        ^ IS THE#        D#  ^IE
   ALTERED INPUT LINE&#46;&#46;&#46;. 10 THIS IS THE STRING  TO BE MODIFIED
<P>
</PRE>
Sample program:
<P>
<PRE>
   program demo_modif
   use M_strings, only : modif
   implicit none
   character(len=256)           :: line
   integer                      :: ios
   integer                      :: count
   integer                      :: COMMAND_LINE_LENGTH
   character(len=:),allocatable :: COMMAND_LINE
      ! get command name length
      call get_command_argument(0,length=count)
      ! get command line length
      call get_command(length=COMMAND_LINE_LENGTH)
      ! allocate string big enough to hold command line
      allocate(character(len=COMMAND_LINE_LENGTH+200) :: COMMAND_LINE)
      ! get command line as a string
      call get_command(command=COMMAND_LINE)
      ! trim leading spaces just in case
      COMMAND_LINE=adjustl(COMMAND_LINE)
      ! remove command name
      COMMAND_LINE=adjustl(COMMAND_LINE(COUNT+2:))
      INFINITE: do
         read(*,&#146;(a)&#146;,iostat=ios)line
         if(ios.ne.0)exit
         call modif(line,COMMAND_LINE)
         write(*,&#146;(a)&#146;)trim(line)
      enddo INFINITE
   end program demo_modif
<P>
</PRE>
</BLOCKQUOTE>
<A name=4>

     <H3>AUTHOR</H3>

</A>
<BLOCKQUOTE>
John S. Urban
</BLOCKQUOTE>
<A name=5>

     <H3>LICENSE</H3>

</A>
<BLOCKQUOTE>
Public Domain
</BLOCKQUOTE>
<P><HR>
<TABLE width=100%><TR> <TD width=33%><I>Nemo Release 3.1</I></TD> <TD width=33% align=center>modif (3m_strings)</TD> <TD align=right width=33%><I>April 30, 2022</I></TD> </TR></TABLE><FONT SIZE=-1>Generated by <A HREF="http://www.squarebox.co.uk/download/manServer.shtml">manServer 1.08</A> from a2429362-ff5f-465f-9831-165651f99777 using man macros.</FONT>
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